A Note on Falling Headwater and Rising Tailwater Permeability Tests
- 1 December 1989
- journal article
- Published by ASTM International in Geotechnical Testing Journal
- Vol. 12 (4) , 308-310
- https://doi.org/10.1520/gtj10990j
Abstract
Falling-head permeability tests may be performed in two ways: (1) with a constant tailwater pressure and (2) with a rising tailwater pressure. Equations published in textbooks and manuals for calculating hydraulic conductivity from a falling-head test are for the first type of test only and are in error by a factor of 2 when applied to the second type of test. The correct equations for calculating hydraulic conductivity for both types of test are derived and confirmed.This publication has 2 references indexed in Scilit:
- Measuring Engineering Properties of SoilJournal of Engineering Materials and Technology, 1986
- Soil Testing for EngineersSoil Science, 1951